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| 型号： | MC1311 |
| 厂商： | Motorola, Inc. |
| 英文描述： | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| 中文描述： | 通用窄带调频接收器集成电路 |
| 文件页数： | 49/68页 |
| 文件大小： | 1316K |
| 代理商： | MC1311 |
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MC13110A/B MC13111A/B
49
MOTOROLA ANALOG IC DEVICE DATA
Power Saving Application – Option 2 (MC13110A and
MC13111A Only)
In some handset applications it may be desirable to power
down all circuitry including the microprocessor (MPU). First
put the MC13110A/MC13111A into the Inactive mode. This
turns off the MPU Clock Output (see Figure 120) and
disables the microprocessor. Once a command is given to
switch the IC into an “Inactive” mode, the MPU Clock output
will remain active for a minimum of one reference counter
cycle (about 200
μ
s) and up to a maximum of two reference
counter cycles (about 400
μ
s). This is performed in order to
give the MPU adequate time to power down.
An external timing circuit should be used to initiate the
turn–on sequence. The “CD Out” pin has a dual function. In
the Active and Rx modes it performs the carrier detect
function. In the Standby and Inactive modes the carrier
detect circuit is disabled and the “CD Out” pin is in a “High”
state, because of an external pull–up resistor. In the Inactive
mode, the “CD Out” pin is the input for the hardware interrupt
function. When the “CD Out” pin is pulled “low”, by the
external timing circuit, the IC switches from the Inactive to the
Interrupt mode. Thereby turning on the MPU Clock Output.
The MPU can then resume control of the IC. The “CD Out”
pin must remain low until the MPU changes the operating
mode from Interrupt to Standby, Active, or Rx modes.
Figure 119. Power Saving Application – Option 1
Timer
MPU Clk
Divider
Clk In
SPI Port
Clk Out
SPI Port
LO2 Out
LO2 In
MC13110B
MC13111B
Microprocessor
Mode
MPU Timer
MPU
Clock
Out
“Low Power”
“Sniff”
Standby Mode
Rx Mode
32.8, 128 or 512 kHz
4.0 MHz
相关PDF资料 |
PDF描述 |
|---|---|
| MC13110AFB | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110AFTA | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFB | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13111AFB | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFTA | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC13110 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110A | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL CORDLESS TELEPHONE SUBSYSTEM IC |
| MC13110AFB | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL CORDLESS TELEPHONE SUBSYSTEM IC |
| MC13110AFTA | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFB | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
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